Chassis frame for all-terrain vehicle



1. Chassis frame for all-terrain vehicle (ATV)

1.1 : Front

1.2 : Back

1.3 : Right

1.4 : Top

1.5 : Bottom

1.6 : Perspective

1.7 : Perspective 

CLAIM The ornamental design for a chassis frame for all-terrain vehicle (ATV), as shown and described. 